外源ALA对NaCl胁迫下生菜植株的缓解效应  

Mitigative Effect of 5-aminolevulinic Acid on Lettuce under NaCl Stress

作　　者：祁向玲[1] 邹志荣[1] 杨蕊[1] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨凌712100

出　　处：《西北农业学报》2008年第2期202-206,共5页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：西安市农业攻关项目"设施蔬菜精准肥水智能控制技术研究"(GG06104)

摘　　要：以生菜为材料,研究了外源ALA(5-氨基乙酰丙酸)对4个不同浓度(0,50,100,150 mol/L)NaCl胁迫下温室砂培生菜植株的缓解效应。其生理生化指标的测定结果表明,外源ALA对盐胁迫有明显的缓解作用,显著提高了50 mmol/L及100 mmol/L NaCl胁迫下生菜的SOD、POD活性及叶绿素含量,降低了细胞膜相对透性,抑制了MDA的生成,提高了生菜植株的根系活力。Lettuce was used to study the effects of exogenous 5-aminolevulinic acid ,the lettuce were planted in the condition of sandy medium in greenhouse and the physiological and biochemical characteristic were measured under four different concentrations of NaCl （0 mmol/L, 50 mmol/L, 100 mmol/L, 150 mmlo/L）. The result showed that there were remarkable mitigative effect of exogenous 5-aminolevulinic acid to the NaCl stress. Under the NaC1 stress of 50 mmol/L and 100 mmol/L , 5-aminolevulinie acid increase the activity of soperoxide dismutase and peroxidase, increased the content of chlorophyll, reduced the conductivity and restrained generate of malondialdehyde,increased the activity of root. In a word,there were remarkable mitigative effect of 5-aminolevulinic acid to the salt stress of 50 mmol/L and 100 mmol/L.

关 键 词：外源ALA NACL胁迫 生菜 缓解效应 

分 类 号：S636.2[农业科学—蔬菜学]